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Medical Definition of Galton's delta
1. A more or less well-marked triangle, in a fingerprint, on either side where the straight ridges near the joint of the distal phalanx are succeeded by arches, loops, or whorls. See: Galton's system of classification of fingerprints. Synonym: triradius. (05 Mar 2000)
Lexicographical Neighbors of Galton's Delta
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